This paper describes formal verification and quantitative performance evaluation for validating of query pattern-based relational schema-to-XML Schema translation (QP-T) algorithm. Many translation algorithms such as FT, NeT, CoT, ConvRel, and VP-T have been introduced on structural and/or semantic aspect for exact and effective translation. However, conventional algorithms consider only explicit referential integrity specified by relational schema or limitations regarding on reflection of implicit referential integrity information. It causes several problems such as incorrect translation, abnormal relational model transition, and so on. The QP-T algorithm analyzes query pattern and extract implicit referential integrities by interrelationship of equi-join in user queries. The QP-T algorithm can make up for weak points of the VP-T algorithm and create more exact XML Schema as a result by using with VP-T algorithm together.